The CEL leading to the O2 makes perfect sense. This reminds me of my last emissions test, just before my birthday. I passed by only 1 hydrocarbon.

Passing by only one hydrocarbon, after changing the oil immediately before the test, along with the engine coolant and a new set of spark plugs leads me to a new problem.

The catalytic converter. They are pricey.

What would you guys do? I'm a pretty anal retentive purist and would not consider one of those jobber type cat cons. I've replaced both mufflers recently so the underside of the car looks pretty damn good. I think I'd like to just put on another 02 and keep driving for sometime and make an RRSP contribution.

Would this be throwing money out the window? What are my options here?

Thanks a bunch,

Mike

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1989 300CE - 269,000 km
1994 SL600 - 59,000 km